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        <title>API docs for &ldquo;sympy.functions.elementary.exponential.MrvLog&rdquo;</title>
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        <body><h1 class="class">Class s.f.e.e.MrvLog(<a href="sympy.functions.elementary.exponential.log.html">log</a>):</h1><span id="part">Part of <a href="sympy.functions.elementary.exponential.html">sympy.functions.elementary.exponential</a></span><div class="toplevel"><div class="undocumented">Undocumented</div></div><table class="children"><tr class="function"><td>Function</td><td><a href="#sympy.functions.elementary.exponential.MrvLog.subs">subs</a></td><td><div><p>Substitutes an expression.</p>
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            <div class="functionHeader">def <a name="sympy.functions.elementary.exponential.MrvLog.subs">subs(self, old, new):</a></div>
            <div class="functionBody"><div><p>Substitutes an expression.</p>
<p>Calls either _subs_old_new, _subs_dict or _subs_list depending if you 
give it two arguments (old, new), a dictionary or a list.</p>
<p>Examples:</p>
<pre class="py-doctest">
<span class="py-prompt">&gt;&gt;&gt; </span><span class="py-keyword">from</span> sympy <span class="py-keyword">import</span> *
<span class="py-prompt">&gt;&gt;&gt; </span>x,y = symbols(<span class="py-string">'xy'</span>)
<span class="py-prompt">&gt;&gt;&gt; </span>(1+x*y).subs(x, pi)
<span class="py-output">1 + pi*y</span>
<span class="py-output"></span><span class="py-prompt">&gt;&gt;&gt; </span>(1+x*y).subs({x:pi, y:2})
<span class="py-output">1 + 2*pi</span>
<span class="py-output"></span><span class="py-prompt">&gt;&gt;&gt; </span>(1+x*y).subs([(x,pi), (y,2)])
<span class="py-output">1 + 2*pi</span></pre>
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